All affected US customers and distributors were notified by certified mail on Nov 12, 2010 via a Field Correction letter. They were told that they would be contacted by Sorin to arrange an appointment to inspect and replace affected touch screens on site. They were told that they could safely continue using their S5 systems in accordance with the Operator's Manual and previously supplied instructions until the inspection and necessary replacement had been completed. A customer response form was also included for completion and return to the firm. Customers can contact the firm if they have any questions.